High Alumina Bricks
Description:
High alumina bricks are made from high-purity refractory clays which is a kind of refractory materials with alumina as the main component.
The high alumina bricks are divided into different kinds according to the content alumina and usage.
Features:
High alumina bricks have the characteristics of high refractoriness, strong slag resistance and good high temperature strength.
Application:
High alumina bricks are widely used in glass furnace, iron and steel blast furnace, cracking furnace, cement rotary kiln, hot blast stoves, electric arc furnace,cement kiln and otherheat-engineering equipments.
Specification:
Item | Burned Bricks | Unburned Bricks | ||||||||
DL-80 | DL-75 | DL-65 | DL80P | DL85P | BDL-80 | BDL-75 | BDL-65 | DL80P-B | ||
Al2O3 % Min | 80 | 75 | 65 | 75 | 80 | 80 | 75 | 65 | 70min | |
Fe2O3 % Max | 1.7 | 1.7 | 1.7 | |||||||
Refractoriness ℃ Min | 1780 | 1780 | 1770 | |||||||
Softening Temperature Under Load KD ℃ Min | 1530 | 1520 | 1520 | 1530 | 1520 | 1470 | ||||
Linear Change Rate After Reheating %(1500℃x2h) | 0.2-0.4 | 0.2-0.4 | 0.2-0.4 | |||||||
Apparent Porosity % Max | Suspended Roof Bricks | 19 | 19 | 19 | 18 | 19 | 18 | 18 | 19 | 19 |
Skew Angel Bricks | 21 | 21 | 18 | 19 | 20 | 20 | 19 | |||
Compressive Strength Mpa Min | 75 | 65 | 58.8 | 50 | 80 | 60 | 55 | 30 | 50 | |
Thermal Shock Stability, Times(1100℃ Water Cooling) Max | 8 | |||||||||
Application | Steel making electric furnace | |||||||||
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